Permutation-lock.



B. H. ZIEHLER.

PERMUTATION LOCK.

APPLICATION FILED OGT.16,1011.

Patented De0i24, 1912.

2 SHEETS-SKEET 1.

u a ux y K J U h 4 lg i a-front elevation of the of the houslng removed.

. tion.

elevation of the inner side BERNARD H. ZIEHLER, OF DAYTON, OHIO.

' PERMUTATION-LOCK.

Specification of Letters Patent.

Patented Dec. 24,1912.

Application filed October 16, 1911. Serial No. 654,944.

To (all Whom, it may concern:

Be it known that I, BERNARD H. ZIEHLER, a citizen of the United States,residing at Dayton, in the county of Montgomery and State of Ohio, haveinvented certain new and useful Improvements in Permutation- Locks, ofwhich the following is a specificalily inventionrelates to locks andparticularlyfto permutation or combination locks used for locking doors,chests or other similar purposes, but especially adapted for lockingagainst movement any movable member such as the control lover of anautomobile or other machine.

The object of the invention is to simplify the structure as well as themeans and mode of operation of such devices whereby they will notonly becheapened in construction but will be more eiiicient in use, positive inaction, easily and readily adjusted and unlikely to get out of repair.

Further objects of the invention are to provide simple and convenientmeans for quickly changing the combination of the permutati n lock andto provide locking means for the lid or closure whereby access may behad to the operating parts only by the proper working of thecombination.

A further object of the invention is to provide means for positivelysecuring the locking bolt in its locked position, independent of thepermutation or combination memers.

\Vit h the above primary and other incidental objects in view will morefully appear in the specification, the invention consists of thefeatures of construction, the parts and combinations thereof and themode of operation. or their equivalents as hereinafter described and settort-h in the claims.'

Referring to the drawings, Figure 1 is a perspective view of thepermutation lock forming the subject matter hereof. Fig. 2 is lock withthe cover Fig. 3 is a side elevation of the assembled lock with one wallof the closure broken away to disclose the operating mechanism within.Fig. 4- is an of the cover or closure for the housing with parts brokenaway. Fig. 5 is a detailed perspective view of the indicator disk andstop for the several combination disks. Fig. (5 is a detailed view ofone of the combination disks and operating mechanism therefor. Fig. 7 isa reversed view of one of the combination disks showing the adjustablestop arm therefor. Figs. 8, 9 and 10 illustrate the step up mechanismwhereby the locking parts are automatically operated upon the movementofthe bolt from unlocked to locked position.

Fig. 8 illustrates the relative position of the parts when thecombination-disks have been operated to unlocked position but before thelocking bolt has been shifted. Fig. 9 is a similar view illustrating theposition of the parts after the locking bolt has been shifted. F ig. 10is a similar view illustrating the relation of the parts after thelocking bolt has been returned from unlocked to locked position and oneof the combination disks automatically advanced to lock the bolt. in itsoperated position. Fig. 11 is a detailed perspective view of theresetting disk. Fig. 12 is a detailed perspective view of the boltshifting mechanism together with the positive locking device thereforand the key locking mechanism controlled by the movement of the bolt.Fig. 13 is a perspective view of one of the spacer disks. Fig. 14 is adetail View of thelocking bolt.

Like parts are indicated by similar characters of reference throughoutthe several views.

In constructing the device there is employed a casing or housingcomprising an annular portion from which projects a rectangular ofi'setportion .2. Located within the annular portion 1 are a plurality ofcombination disks independently revoluble therein controlling themovement of a locking bolt 3 reci 'irecuting in and projecting beyondthe rectangular offset portion 2 o the housing. Centrally disposedwithin the annular portion of the housing 1 is the main shaft 4.Stationarily secured within the housing and adjacent to the inner wallthereof is the indicator disk 5, shown imdetail in Fig. 5 carrying astop post 6 projecting perpendicular to said Indicator disk 5 andpreferably formed integral therewith.

'Iheindicator disk 5 carries adjacent to its periphery a series offigures or charactersby which the stop levers of the combination diskshereinafter mentioned may be adjust-- ed to, various relative positions.Each of the combination or permutation members comprises adisk 7revolubly mounted upon the main shaft 4 and having formed in itsperiphery a series of notches or recesses 8 co-rresponding'to thefigures or charactersupon the indicator disk 5'. There is also in eachof. the combination disks 7 a deep notch or recess 9 within which thelocking bolt will reciprocate when the several combination disks are inunlocked position. Any number of such combination disks may be employedbut it is found-that three such disks provide the preferablecombination. Secured to one side'of each of the revoluble combinationdisks 7 isa ratchet pinion 1O by. which the disk may be rotated upon themain shaft 4.

Pivotally located upon a suitable stud 11 'adjacentflto the series ofcombination disks 7- are a. plurality of operating levers 12, one suchoperating lever for each of the combination disks 7. Each of.theoperating levers 12 is provided with an arm 13 projecting through asuitable opening in the ing lever 12 and thereby rotates the ratchet vpinion 10 and its connected combination disk 7 through an advancedmovement of one step. Retracting springs 15 are provided for each of theoperating levers adapted to return the levers after each operationwhereby the operating pawl 14 will be Withdrawn entirely from engagementwith the ratchet pinion 10 thereby permitting the pinion to be rotatedin reversed direction to reset the disk as hereinafter mentioned. Thepawl arms 14 may be of any suitable shape or design, those shown in thedrawing being provided with pendant arms 16 which engage wall of thehousing when the operating :ers 12 are in normal position to maintainpawl arms in position to engage the ratchet pinions 10 upon theoscillation of the operating levers. Located upon the opposite side ofeach of the combination disks 7 is an adjustable stop arm 17 which ismovable in 1 a radial direction and then to different radial positionsin relation to the main shaft 4. Each ofsaid adjustable stop arms isprovided With a lug or projection 18 adapted to engage in any oneof theseries of notches or recesses 8 in the periphery of the combinationdisk; 7. Each of the stop arms 17 comprises a disk shaped head portioneccen- .trio with the main shaft 1 from which the arm projects in aradial direction. Each of 4 engages.

the stop arms is provided with an aperture 19 within a portion of whichthe main shaft There is .also located in the aperture 19 of each of thestop arms a spring 21- engaging the wall of the aperture and alsoengaging the main shaft 4 as clearly shown in Fig. 7. This spring 21tendsto move the stop arm radially toward the main shaft 4 therebymaintaining the lug 18 in engagement with the notch or recess 8 in theperiphery of the combination'disk' 7. The engagement of the lug 18within the notch 8 prevents the revoluble movement of the stop arm fromthe adjusted radial position. There is provided injeach of the stop arms17 adjacent to its outward extremity an opening 22 .in which may beengaged a pointed instrument by which the stop arm may be pulled outwardin a'radial direct-ion against the tension of the s ring 21 to disengagethe lug 1.8from the notch 8 in the poriphery of the disk whereupon thestop arm may be rotated about the main shaft 4 to ad- .just the stop armto different radial positions enabling the lug 18 to be engaged in anyone of the notches or recesses 8. By this adjustment of the several stoparms to different radial positions the series of operations necessary tomove the several disks to unlocked position may be varied. It is to beunderstood that several of the combination disks 7 together with theircorresponding ratchet pinions 10 and stop levers 17 are mounted side byside upon the main shaft 4 but that each of said combination diskswith-its corresponding pinion and stop lever is independently rotatable.upon said shaft. In order that the rotation of one of the combinationdisks may not interfere with or effect the rotation .of the nextsucceeding disk there is interposed between. successive disks a spacermember or washer 23 comprising a plain disk mounted upon the main shaft4 having a projecting lug or finger 24 engaging with the stop post 6. Inthe draW- ing the stop post 6 is shown as provided with a central slotor opening 25 in whichthe fingers 24 of the spacer members 23 engage. Itis obvious however that the spacer-members may be provided with twoseparated lugs or fingers similar to the finger 24 which separatedfingers would engage on opposite sides of the stop post '6 or saidspacer members might be secured upon the main shaft 4 or stationarilyheld thereon byany other suitable means.

In order to automatically lock the bolt in its operated position withoutthe' necessity of manually adjusting the several combination disks thereis provided means for automatically advancing one of the combinationdisks a predetermined step at each operation of the bolt therebynecessitating the resetting of the combination disksto unlocked positionbefore the bolt can be 'izo gages the inclined again operated. Thisconstruction is best shown in Figs. 8, 9 and 10. There is looselyournaled upon the mam shaft 4 besides one of the combination disks 7 anadvance disk' 26 having therein a concentric slot or aperture 27.Located within the slot or aperture 27 is a spring 28 one end of whichengages in the combination disk 7 or its corresponding ratchetpinion 10while the opposite end of the spring '28 engages in the advance disk asat 29. The advance disk 26 is also pro ided with a notch or recess 30corresponding to the recess 9 of the combination disk 7. One side of thenotch or recess 30 is beveled as at 31 to form a,,cam fact adapted to beengaged by the extremity of the locking bolt upon its inward movement torotate the advance disk 26 against the tension of its spring 28. Thereis also provided in the periphery of the advance disk 26 a notch 32-adapted to be engaged by a hook arm 33 pivotally supported upon the stud11 and is spring pressed toward the advance disk 26 by a spring 34; InFig. 8 the several parts are shown inunlock'ed position, that is withthe several combination disks adjusted to bring the notch or recess 9 ofeach disk into registry with the locking bolt 3, but that locking bolt 3has not been shifted inward or upward to its unlocked position. Itwillbe noticed by reference to Fig. 8v that whilethe notches or-recesses9 of the several combination disks 7 register with the extremity of thelocking board 3, the notch or recess 30 of the advance disk is offset orout of alinement with the extremity of the locking bolt. As'the lockingbolt 3 is moved inward by manually operated means hereinafter mentioned,it enters the notches or recesses of the several combination disks 7 andalso encam face 31 of the notch 30 in the advance disk 26. By the inwardmovement of the locking bolt 3 while in engagementwith the inclined face31 of the notch 30, the said disk 26 is rotated to bring the notch 30into registry with the notches 9 of the several combination disks 7.This rotation of the advance disk 26 is against the tension of thespring 28 placing such spring under stress. The rotation of the advancedisk 26 due to the action of the locking bolt 3 upon the inclined camface 31 brings the notch 32 in the periphery of said disk into registrywith the hook arm 33 whereupon the said hook arm 33 engages in saidnotch 32 under the influence of the tion disk to which it is attachedthrough a 34 to retain the advance disk 26 in sprin The spring 28engagits ad usted position.

at one extremity the advance disk 26 and at its opposite end theadjacent combination disk 7 or its ratchetpinion 10 being placed undertension by the rotation of .the advance disk 26 tends to rotate saiddisks in opposite directions upon the main shaft t.

However the brick arm 33 engaging in the notch 32 prevents the returnrotation of the advance disk 21' while the locking bolt 3 engaging inthe notches or re esses 9 of the several combination disks 7 prevents amovement of said combination disks until the locking bolt is withdrawntherefrom. However upon the shifting movement of the locking bolt 3 fromits unlocked or inner position toward its locked or operated positionwithdraws said bolt from within the notches or recesses 9 of thecombination disks and immediately thereupon and before the locking bolthas effected the release of the hook arm 33 from the notch 32 the spring28 acts to advance the combination disk 7 to which it is attached adistance of one step as is clearly shown in Fig. 10. This effectuallyprevents a return movement of the locking bolt 3 until the combinationdisks are again rotated to bring the several notches or recesses 9 intoregistry. The locking bolt 3 provided with a projecting shoulder 35 at'its upper extremity which shoulder engages with the hook arm 33 as thelocking bolt is advanced into its locked or operated position andthereby withdraws the hook arm from its engagement with the notch 32 ofthe advance disk 26 against the tension of the spring 34. When the hookarm 33 is so disengaged the disks are free to bereset to normal orzero-position. To recapitulate the automatic locking mechanismillustrated in Figs. 8, 9 and 10 is such that the independent operation.of the several combination disks 7 brings the notches or recesses 9thereof into registrywith each other and also into registry with theextremity of the locking bolt 3. This adjustment of the combinationdisks 7 also adjusts the advance disk 26 to bring the inclined face 31into the path of the locking bolt 3. The engagement of the locking bolt3 with the inclined face 31 rotates the advance disk 20 upon the mainshaft -'l thereby placing the spring 28 under tension. The hook arm 33under the influence of the spring 34 engages in the notch 32 in theperiphery of the ad- Vance disk 26 thereby retaining said disk 26 in itsoperated position and the spring 28 under tension. Upon thedisengagement of the locking bolt 3 from the notches or recesses 9 ofthe combination disks 7 and before the shoulder 35 has engaged the hookarm 33 the combination disks being released by the withdrawal of thelocking bolt 3 the spring 23 acts to advance the combina- The furthermovement of the locking bolt thereupon withdraws the hook arm 33 andpermits the several disks to be returned to normal.

To return the several disks to normal position there is provided aresetting disk 36 loosely j o-urnaled on the main shaft 4 and providedwith the arm 37 extended perpendicular to the plane of the said disk 36and across the peripheries of the several combination disks as shown inFig. 3. The resetting disk is adapted to be rotated upon the main shaft4- by means of a manually operated knob or stem 38 upon the exterior ofthe cover or closure of the housing 1, said knob carrying at its innerside of .the closure a head 39 having therein a recess or notch 40within which engages a lug 41 upon the resetting disk 37. As the knob orstem is rotated the resetting disk 36 is revolved in unison there withand its arm-'37 extending across the periphery of'the severalcombination disks 7 engages with the projecting stop arms 17 therebyrotating the'several disks until the stop arms 17 thereof are broughtinto registry with each other and into engagement with 'the stop post 6by which the rotary movement is limited. The resetting disk 36 is thenrotated in the opposite directionto move the arms 37 out of the path ofthe several stop arms 17, the movement of the resetting disk'in theopposite direction he- I ing limitedby the engagement of the lug 42thereof with the opposite side of the stop post 6. Carried upon thelower portion of the lid or closure of the housing is a second revolubleknob or handle 43 carrying upon itsshaft a rock arm 44. The rockarm44engages in a notch or recess 45 in the re-- ciprocating. locking bolt .3whereby said bolt is shifted to and'from its locked posi tion by thepartial rotation of the knob or handle 43. 'loprevent injury to thecombination disks 7 in the event that an attempt is made to force thelocking bolt inward or.

path of the rock arm 44 whereby the rock arm 44 upon itsinitial movementwill en-- gage said dog or detent and remove it from engagement with'thebolt 3. This is best shown by dotted lin es'i'n Fig. 2. The notch orrecess 45 in the bolt 3 is sufliciently large to permit the rock arm 44an initial move ment by which it disengages the dog or detent'46 beforeit engages the upper side of said notch or recess 45 to reciprocate thebolt 8. During the time that the bolt is being shifted the dog or detentrides upon the side of the bolt until the bolt 3 is returned to itsoperated or locked position whereupon the dog or detent again engages inthe notch or recess 48. I

In order to prevent the removal of the lid or closure of the housingwhereby access may be had to the working parts of the look by anunauthorized person, locking means are provided for securing the lid orcover in engagementwith the housing the unlocking of which is dependentupon the successful operation of the permutation locking mechanismbefore described. There are provided about the inner periphery of thehousing 1 a plurality of spaced lips or ledges 50. Revolubly mounted ina suitable guide upon the inner face of the closure or cover of thehousing is a rotatable annular ring 51 having a plurality of lips orextensions 52 registering with the spaces between the lips or ledges 50of the housing 1. The

annular ring 51 is solocated upon the clo sure of the housing thatwhenthe closure or lid is in engagement'with the housing the annular ring 51will extend into a plane beyond the plane of the lips or ledges 50'ofsaid housing and byv the rotation of the an nular ring 51 its lips orextensions 52 maybe made to engage beneath the lips or ledges of thehousing 1. This locking construction is best shown in Figs.2, 3 and 4.Theguide of the annular ring 51 is apertured as at 53 within whichapertureis located a'yielding spring detent 54 engaging either one oftwo notches 55 in the inner periphery of the annular ring 51 therebyretaining the annular I ring in its adjusted position. To rotate theannular locking'ring from the exterior of the housing there is provideda key 56 adapted to be introduced through a suitable key hole 57 andupon its rotation to engage -in asuitable recess 58 in the periphery ofthe annular locking ring and by its continued rotation to shiftthelocking ring to move. its lips-or extensions 52 into and out of registrywith the .lips or ledges 50 of the housing 1.

To prevent the unauthorized use of the key for'attaining access to thepermutation lock mechanism there is vprovided a sliding IU shapedmembersecured to the rear wall of the'housing 2, by means of a screw60'engaging in a slot 61. A spring 62 maintains loo the U shaped--member 59 in its elevated vpo sition'but said member is depressiblefins hereinafter mentioned against the tension of said spring 562. Theupper arm 63 of the member 59 projects outward into the path of the key56 as clearly shown .in Fig. 2 in which the key and itspathof, travelare indicated by dot and dash lines. Under normal conditions'the key 56would engage the a "'21 63 of the member 59 upon any attempt to rotatethe key prior to its engagement with the locking ring 51. The keycanonly be employed to shift the'locking 'ring 51 by first withdrawingthearm 63 of the member 59 from the path-of travel of the key and againstthe tensionof the-spring .62. This is accomplished ,by the means of alever 64 pivoted upon the rear wall of the housing 2 one extremity-ofsaid lever engaging .the member 59 and the opposite extremity thereotengaging in a recess 65 in the recipkey by rocating bolt 3. At theinitial movement of the reciprocating bolt 3 the lever 64 will be forcedfrom its engagement therewith by the cam like action of the'side of therecess 65 thereby oec-illating the lever 64 and cansing its opposite endto bear down upon the member 59 forcing said member downward against thetension of the spring 62and withdrawing the arm 63 from the path of thekey. that the bolt cannot be shifted until the combination disks 7 havebeen operated as before described. There are preferably provided in thelocking bolt 3 two notches or recesses 65 for the engagement of thelever 64 whereby said lever 64 will engage in one said notches at eachlimit of the stroke of the bolt 3. Thus the member 59 will only bewithdrawn from the'path of the key duringa brief interval in theoperation of the bolt and will be returned to the path of the the spring62 when the bolt has completed its movement in either direction therebyallowing the .lever 64 to again enter either one of the recesses 65.Thus the arm 63 is withdrawn from the path of the key permitting the useofthe latter only ,whenthe bolt is partially operated. Thus in order toremove the cover of the housing it is necessary tofirst operate thecombination disks 7 to release the bolt 3 and then to partially shiftsaid bolt 3 by means of the manually operated handle 43 and while saidbolt is substantially at its midstroke to turn the key 56 which willshift the locking ring 51 into unlocked position. It will be obviousthat the operator must know the combination of the permutation lockmechanism before he can use the key and that it is impossible to employthe key for the purpose of ascertaining the combination of the bermmtation mechanism.

Operation: After assembling the several disks upon the main shaft 4 andarranging the other mechanism in proper relation thereto as hcreinheforedescribed the disks are manually adjusted uponthe main shaft 4 to bringthe several notches or recesses 9 intli registry with eacholhcr and alsointo registry with the upper end of the reciprocating locking bolt 3. Apointed instrument is then engaged in the opening .22 in the stop arm 17of each of the combination disks It is to be understood of course 7 andthe stop arm is drawn outward against the tension of its spring 20 untilthe lug 18 is disengaged from the notch 8 in the periphery of said diskwhereupon the arm 17 is rotated upon the main shaft 4 to a predeterminedposition indicated by the characters or figures upon the indicator disk5. In Fig. 2 of the drawing, the several arms have been shown as thusadjusted to positions indicated by Z, 6 and 8 hereby making thecombination of the lock mechanism shown in the drawing two hundred andsixty-eight. This. implies that one of the disks shall be operated twosteps, the second disk operated six steps and the third disk operated,eight' steps to bring the several notches or recesses 9 into registrywith each other and into registry with the locking bolt 3. After settingthe combination as before mentioned the knob or handle 38 is rotatedthereby rotating the resetting dik 36 and causing its arm 37 to engagethe several stop arms 17 .of the different disks 7 and rotate said disks7 to their normal or zero position where their movement is limited bythe engagement of stop arms 17 with the stop post 6. The disk 36 and itsarm 37 are then rotated in thereversed direct-ion by the handle 38 tocarry the arm 37 out of the path of the stop arms 17. The notches 9 ofthe several combination disks 7 being out of registry with the lockingbolt 3 the said bolt will be locked in its operated position. To releasethe bolt 3 the several operating levers 12 are successively operated bymeans of their projecting arms 13, the first arm being oscillated twicecausing its pawl arm 14 to engage with the ratchet pinion 10 of thefirst disk 7 and advance said disk one step or the distance of one toothat each operation. This will bring the notch or recess 9 of the firstdisk into registry with the locking bolt. The second operating lever 12is then oscillated through six operations advancing its correspondingdisk a distance of six steps or teeth of the ratchet pinion. The lastoperating lever 12 is then oscillated eight times advancing itscorresponding disk eight steps whereupon the several notches 9 will bein registry with each other and with the locking bolt. The

knob 43 is then rotate causing the rock arm 44 to first engage hedetent. or dog 46 and force it. out of engagement with the locking bolt3 and thereafter engage the up per side of the recess 45 to shift thelocking bolt upward or inward causing it to enter within the notches orrecesses f) of the sevcral combination disks 7. The upper end of thelocking bolt enters within the notches or recesses 1) and engages theinclined cam face 31 of the advance disk 26 and rotates said disk uponthe main shaft 4 placing the spring 2 under tension. Upon the rotationof the advanced disk 26 the hook arm 33 en.-

' gages the notch 32 under the influence of its spring 34 to maintainthe advance disk26 in its operated position. Upon the return movement ofthe bolt 3 the spring 28 by its expansion advances one of thecombination disks 7, with which it is engaged, one step thereby preienting the return movement of the locking bolt 3 and said bolt'3continuing its movement engages and withdraws the hook arm from itsvanced disk 26 thereby permitting the severaldisks to be returned tonormal position.

In the event that access is desired to the interior of the housing inorder to change the combination of permutation mechanism thereciprocating bolt 3 is arrested at its midstroke in 1 which positionthe lever 64 has been disengaged from the notch 65 of the bolt and isriding upon the side face of said bolt as shown by dotted lines'in Fig.2. At this time the lever 64 has depressed the member 59 to Withdraw thestop arm 63 from the path of the key. The key may now be rotated, andwill in turn rotate the looking ring 51 to move sions 52 out ofengagement with the corresponding lips or ledges 50 of the housing 1.The coveror closure of the housing is relocked in the same manner.

From the above description it will be apparent that there is thusproduced a permutation lock of the character described possessing theparticular features of advantage as before mentioned asdesirable whichis herein illustrated in the preferred form, but Which obviously issusceptible of modification Within the scope of the appended olaims'inits form, proportions, detail construction and arrangement of partswithout,

departing from the principle involved or sacrificing any of itsadvantages.

Having thus described my invention I claim;

1. In a permutation look, a movable belt, a plurality of independentlymovable members adapted to normally limit the movement of the bolt butby the predetermined relative movement adapted to release the bolt,adjustable stops carried by each of the members to a plurality ofindependently revoluble disks.

adapted to normally limit the movement of the bolt but adapted uponpredetermined relative adjustment to permit the move engagement with theadits lips or exten-i limit the movement thereof, a stop post adapted.tobe engaged by said relation to the stop 'ipaaeea adjusted to differentradial positions in relation to the revoluble disks, the indicationsupon the fixed disk corresponding to the adjusted positions of the stoparms indicating the series of operations necessary to move the disks toposition to release the bolt. p v

3. In a permutation look, a movablebolt, a plurality of independentlyrevoluble disks adapted to normally limit the movement of the bolt butadapted upon predetermined relative adjustment to permit the movement ofthe bolt, a stop arm carried by each of the disks, each of said diskshaving a series of notches therein, 'alug carried by each of the stoparms and adapted to engage any one of the notches of the disk; wherebythe arm and disk may be engaged or disengaged by a movement of the armin a radial direction, the arm being capable of adjustment to difi'erept radial positionswhen disengaged from the disk by a radialfmovemem,and adapted to be engaged therewith in its difierent-relative. positionsof adjustment by a return radial movement.

4. In a permutation look, a movable bolt, a plurality of independentlyrevoluble disks adapted to normally limit the movement of the bolt butadapted upon predetermined relative adjustment to permit the movement ofthe bolt, a stop arm for each of the disks capable of movement in a.radial direction and -also tions in relation to the disks, interengagingmeans between the armand disk, :1 spring tending to maintain the arm anddisk in engagement, the arm. being adapted to be disengaged from thedisk by a radial position a stop corresponding to-=diiferent radial posimovement thereof against the tension of the spring, and whensodisengaged capable of adjustment to different radial positions, andadapted to be reengaged in its adjusted position by the action of thespring.

5. In a a plurality of independently revoluble disks adapted to normallylimit the movement of the bolt but adapted upon predetermined relativeadjustment to of the bolt, ashaft upon which the disks permit themovement are mounted, a plurality of stop-arms, one for each of thedisks also journaled on said shaft but capable of a limited radialmovement in relation thereto, a series of notches in the periphery ofeach of the disks, a lug carried by. the stop armadap'ted toengageanyone of said notches, anda spring ing to move thearm in a radialdirection and thereby maintaining the stop arm lug permutation look, amovable bolt,-

tendsaid stop members, the bolt being adapted in engagement within theselected notch, said arm being capable of being disengaged by a radialmovement against the tension of the spring and then shifted intoengagement with any notch of the series.

(3. In a permutation look, a movable bolt, a plurality of independentlymovable oscillatory members concentrically pivoted on a common shatt,means whereby the move ment of the bolt from locked to unlocked positionwill advance one of said oscillatory members, and an actuatingconnection between'the advanced member and another member of the seriesof oscillatory members pivoted on the same shaft whereby such second.member will be subsequently oscillated to lock the bolt againstmovement, substantially as specified.

T. la a permutation lock, a movable bolt, a plurality ol independentlyrotatable stop members adapted to normally limit the movement of: thebolt, but adapted by predetermined relative movement to release thebolt, an oscillatory disk pivoted concentrically with one of the saidstop members and having tla rem a cam shaped recess, a spring connectingthe oscillatorv disk and one o't upon movement to enter the recess ofthe oscillatory disk and by engagement with the cam side thereof tooscillate said disk to place the spring under tension, said ten sionedspring being adapted upon release to move the stop member into lockingposition. substantially as specified.

S. In a permutation lock, a movable bolt, a plurality of independentlymovable members adapted to normally limit the movement of the bolt butby predetermined relative movement adapted to release the bolt, anadvance member, having a cam face thereon engaged by the bolt upon itsmovement; from locked to unlocked position whereby said advance memberwill be operated, a spring placed under tension by the movement of theadva1me-member, means for locking the advance member in its adjustedposition thereby maintaining the spring tension, said spring beingadapted to move one of the movable members to locked position upon thereturn movement of the bolt, and means for releasing the advance memberby a further movement of the bolt.

9. In a permutation lot-k. a movable bolt, a pluralityol imlependcntlyrevoluble disks adapted to normally limit the movement of the bolt butadapted upon predelermined .relative adjustment to permit the movementot the bolt. means for manually rotating the disks to release the bolt,an oscillating advance member having a recess therein pro vided with aninclined wall adapted to be engaged by the bolt. in its movement fromlocked to unlocked posit ion whereby said oscillating advance memberwill be advanced a predetermined step, independent of the disks, aspring engagmg said oscillating advancemember and likewise engaglng oneot the disks, said spring being placed. under tension by the advancemovement of the oscillating advance member, a hook arm adapted to engagethe oscillating advance member and maintain it in its operated positionwith said spring under tension, the spring being adapted upon itsrelease by the return movement of the bolt to advance one of the disksto locking position to prevent a rcoperationof the bolt, and aprojection upon the bolt adapted to engage and withdraw the hook arm torelease the oscillating advance member-by a further movement of r thebolt, -substantially as specified.

10. In a permutation look, a movable bolt, a plurality of independentlymovable members adapted to normally limit the movement of the bolt butby predetermined relative movement adapted to release the bolt, meansfor shifting the bolt when the mov able members have beenadjusted t0predetermined positions, a detent'adapted to engage the bolt andmaintain it. in its locked position independent of the said movablemembers, and means for withdrawing the detent by' the initial movementof the bolt shitting means, substantially as specified.

11.111 a permutation look, a movable member to be locked, aplurality'o't independently movable locking members adapted to normallylimit the movement the movable member but adapted when adjusted topredetermined relative positions to release the movable member, ahousing for said parts, a movable closure for said housing. a keyoperated lock for said closure. adapted to secure the closure inposition in; dependent of the locking action of the movable leckingmembers and a stop member normally preventing the operation of said keyoperated l()(l said step permitting the o eration oi the keyoperatedlcck only when the said movable locking members have beenadjusted to predetermined posilion.

12. In a permutation lock. a inovable member to be locked, a pluralityof independently movable locking members adapt ed to normally limit themovement of the movable i'ncttiher. but adapted when adjusted topredetermined relativepositions to release the movable member, a housingfor-said parts, a movable closure-for said housing. a movable lockingmember carried by said closure, :1 key adapted to shift the lockingmember into and out of engagement with the the key to release theclosure until the first mentioned movable lot-king members have beenadjusted to predetermined positions. and means tor withdrawing the stopto permit the operation of the key when said movable members have beenso adjusted, substantially as specified.

13. In a permutation look, a movable member to be looked, a plurality ofindependently movable locking members adapt ed to normally limit themovement of the movable member but adapted whenadjusted to predeterminedrelative positions to release the movable member, a housing for topredetermined relative positions to re- 'ment of the bolt, but

lease-the movable member, a housing for said parts, a closure for saidhousing a revo'luble locking ring carried by said closurehaving'extensions thereon extensions within the housing adapted to beengaged by the extensions of the locking ring upon a partial rotation ofthe latter, a key adapted by its rotation to rotate the stop extendinginto the path of the key, means for withdrawing the stop from the pathof the key by the adjustment of the said movable member to be locked toa pre- "determined position, and means for manually adjusting-theindependently movable locking members to positions to release the saidmovable member to belocked.

15. In a permutation lock, a movable bolt, a pluralit-y of independentlymovable members-adapted to normally limit the move by predeterminedrelativemovement adapted to release the bolt, adjustable stops adaptedto limit the ment thereof, and means for adjusting the said stops todifferent positions in relation said movable memlimit the movement ofthe" locking ring, a

movetothe said movable members without disassembling the structure,whereby said movable members may be'allowed a greater or less movement,substantially as specified,

16, In a permutation leek, a movable lock of independently movmg bolt, aplurality able stop members movement of the bolt but upon predeterminedrelative adjustment adapted to release the bolt, an adjustable stopmember cooperating with each of the movable members and capable ofmovement independent thereof, interengaging means between the adjustablestopand movable member adapted to be engaged and disengaged by areciprocatory movement of the direction, the stop when disengaged beingadplstable to various radial positionsin relation with the movablemember and capable of being reengaged therewith in its new position,whereby varying the extent of the path of travel of the movable member,sub stantially as specified.

17. In a permutation leek, a movable bolt, a plurality of independentlyrevoluble disks adapted to normally limit the movement of the bolt butadapted upon predetermined relative adjustment to permit the movement ofthe bolt, a stop arm carried by each of the disks, interengaging meansbetween the disk' and stop arm whereby the arm and disk may be engagedor disengaged by amovement of the arm in a radial direction the angularpositions upon the disk when disengaged therefrom by a radial movementand adapted to be reengaged therewith in any such position of angularadjustment by a a return radial movement, substantially as.

specified.

In testimony whereof, I have hereuhto set my hand this 12th day of@ctober 1911.

BERNARD a. ZIEHLER.

Witnesses HARRY F: NOLAN,

B. LUTTINGER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner Washington, D. G."

of Patents, I

adapted to limit the v step in a radial arm being capable of adjustmentto difi erent

